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Derivative Instruments and Hedging Activities (Pretax Amounts Recognized in Accumulated Other Comprehensive Income on Currency Contracts) (Details) (Foreign Exchange Cash Flow Hedges [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Foreign Exchange Cash Flow Hedges [Member]
       
Derivative [Line Items]        
Beginning unrealized net loss in AOCI $ (12) $ (635) $ (365) $ (384)
Net loss reclassified into Revenue (effective portion) 100 429 229 838
Net loss reclassified into Revenue upon the removal of a hedge designation on an underlying foreign currency transaction that was cancelled   4   11
Net gain (loss) recognized in OCI (effective portion) 498 (831) 722 (1,498)
Ending unrealized net gain (loss) in AOCI $ 586 $ (1,033) $ 586 $ (1,033)